Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 65 for “"levels of detail"”.
-
Multi-scale data storage schemes for spatial information systems
… led to the design and prototype implementation of several data storage schemes suited to the efficient multi-scale representation of integrated spatial data. Spatial information systems will benefit from having data models which allow for data to be viewed and analysed at various levels of …
-
An implementation of terrain geomorphing in the vertex shader for synthetic planetary surfaces
The purpose of this research is to develop the three-dimensional models of planetary surfaces which can be used in the test environments for the Vision-Based Navigation Systems' (VBNS) terrain recognition and navigation algorithms. The VBNS will fly a trajectory over the planet, taking pictures …
-
Procedural Generation and Rendering of Large-Scale Open-World Environments
… must be addressed by a game's graphics engine. Often there are a large number of visible objects, such as all of the trees in a forest, as well as objects comprised of large amounts of geometry, such as terrain. An open-world graphics engine must be able to render large environments at varying …
-
Flexible manufacturing system software development using simulation
… a Flexible Manufacturing System (FMS) at all levels of detail. The method was developed specifically to aid the software development needed for the hierarchy of computers that are present in an FMS. The method was developed by modeling an existing FMS. The models developed of the existing FMS …
-
Droplets, splashes and sprays: highly detailed liquids in visual effects production.
An often misunderstood or under-appreciated feature of the visual effects pipeline is the sheer quantity of components and layers that go into a single shot, or even, single effect. Liquids, often combining waves, splashes, droplets and sprays, are a particular example of this. Whilst there has …
-
Measurement and evaluation of multimedia I/O performance
… systems as the disparity between the speed of the I/O system and the CPU continues to grow. This research addresses the performance evaluation of I/O, with special emphasis on multimedia workstation-class systems. First, multimedia I/O activity is shown to be bursty with correlation across …
-
Software Architecture Considerations for Facilitating Electric Power System Planning Incorporating a Variety of Design Categories
This work investigates some of the features of existing software applications for electric power system planning as well as some of the limitations that keep these applications from being more frequently used in distribution planning. This work presents a software framework that could facilitate …
-
Decentralized utilization incentives in electronic cash
… economic growth. However, the asymmetry of economic control and potential abuses of power implicit in centralized systems may be undesirable. An electronic cash design may be able to create resource utilization incentives via decentralized mechanisms. Decentralized mechanisms may be …
-
New statistical genetic methods for elucidating the history and evolution of human populations
In the last few decades, the study of human history has been fundamentally changed by our ability to detect the signatures left within our genomes by adaptations, migrations, population size changes, and other processes. Rapid advances in DNA sequencing technology have now made it possible to …
-
Analyzing patterns of writing and sketching in the product design process
… during the design process. These notes consist of text entries as well as sketches with varying levels of detail. Previous research on the design process has focused on sketches, including their effect on design outcome, differences based on prior sketching experience, and more. This paper looks …
-
A Hierarchical, Integrated Process-, Resource- and Object-Model
… well as economic aspects. The general objective of this study is to investigate the use of cost information during the stage of planning production systems in order to integrate technical and economic aspects. Its main aim is to create a model, providing cost information in different levels of …
-
South African policy analysis on respectful maternal care
… maternal care (RMC), which includes high quality of care that is dignified, respectful and free of violence and discrimination. Addressing disrespectful maternal care requires interventions at multiple levels including policy. The purpose of this study was to determine the extent to which current …
-
Benthic: Designing Relational Traversal Structures to Enhance Diagram Accessibility
… Existing methods for making diagrams accessible often fall short, providing only superficial overviews and lacking detailed, navigable structures. This paper introduces Benthic, a system for generating intermediate representations and depicting relational information in diagrams. Benthic provides …
-
Procedurally generated realistic virtual rural worlds
Manually creating virtual rural worlds is often a difficult and lengthy task for artists, as plant species selection, plant distributions and water networks must be deduced such that they realistically reflect the environment being modelled. As virtual worlds grow in size and complexity, climates …
-
“Customization is Key”: Four Characteristics of Textual Affordances for Accessible Data Visualization
… hierarchically to enable reading varying levels of detail, the textual descriptions remain fixed: their syntax and semantics are set by the visualization author or tool, and cannot be changed by a BLV user based on their preferences or task-specific needs. In this thesis, I explore four …
-
Description of interactions of Ebola virus with a putative reservoir species using next-generation sequencing
Ebola virus (EBOV) causes a severe, often fatal disease in humans and nonhuman primates. Recently, EBOV has caused two very large outbreaks, one of which is ongoing in the Democratic Republic of the Congo. Bats are the likely reservoir of EBOV, but little is known of their relationship with the …
-
Emergent information from low-resolution representations. Methods and applications from protein simulations to artificial neural networks.
… production, availability, and diffusion of data. On the one hand, advances in measurement techniques, simulation methods, and computational power have enabled the description of natural systems at increasingly fine levels of detail and across broader spatial and temporal scales. On the …
-
Hybrid Modelling and Optimisation of Oil Well Drillstrings
The failure of oil well drillstrings due to torsional and longitudinal stresses caused by stick-slip phenomena during the drilling operation causes great expense to industry. Due to the complicated and harsh drilling environment, modelling of the drillstring becomes an essential requirement in …
-
Feature eXtraction : a tool for analyzing sparse time series data
… methodology for qualitative analysis of sparse time series. Information about the changes of the signal level within a time series and the number of distinguishable signal levels is extracted and condensed into a pattern string. The qualitative analysis of a time series can be done at …
-
Incorporating User Opinion into a New Wine Tourism Map for Southwest Virginia
… destinations and also may contain a wide variety of additional information to enhance traveler experiences. Unlike other types of maps that focus on accurate topographic representation of an area or on depiction of spatial data, tourist maps should be specifically constructed to appeal directly to …
Page 1 of 4